Name Date

Convection Currents

1. Draw what you observed during the demonstration. Make sure to label everything: heat source, the direction the thyme travels.






2. Why is the thyme moving in a circular pattern?




3. What happens to the molecules in the liquid as they are heated? Draw a picture of what the molecules would look like. In question 1 label the location of the oil being heated.








4. What happens to the liquid as it cools down? Draw a picture of what the molecules would look like. In question 1 label where the oil is cooled.







5. In your own words explain what a convection current is and what causes the convection current.







Connecting What You Know.

1. Connect convection currents to earthquakes.









2. Draw a picture of Earths three layers, a convection current inside Earth and show were the convection current is being heated and cooled.












3. Can convection currents occur in, solids, liquids and gases. Think back to what learned about these three phases.